ACE2 and infection: It has emerged from the relevant detections that sheets of 293T‐ACE2 cells have become infected in Control; however, only scattered single‐cell infection or no infection has been found in other groups for 9 months after corresponding inoculation, meaning that blocking‐up efficiency against SARS‐Cov‐2 could keep ongoing for over 9 months of durations (Figure S10f).